Samuel fiske



(No Model.) 2 SheetS-S.heet 1.

I s.v FISKE.

GRATE FOR FURNACES, 6w.

Patented June 14, 1887.

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N. PETERS, Fhoio-Lilhugnphnr. Wnhingkm. 01C.

s. PISKE.

GRATE FOR FURNACES, 850. No. 364,712. Patented June 14, 1887.

(No Model.) 2 Sheets- -Sheet 2.

UNITED STATES PATENT OFFICE.

SAMUEL FISKE, on NEW YORK, N. Y.

GRATE FOR FURNACES, 84.0.

SPECIFICATION forming part of Letters Patent No. 364,712, dated June 14, 1887. Application filed November 8, 1886. Serial No. 2182-7. (No model.)

To all whom it may concern:

Be it known that I, SAMUEL FIsKE, a citizen of the United States of North America, and a resident of the city, county, and State of New York, have invented a new and useful Improvement in a Furnace Grate and Base, of which the following is a specification. The object of this invention is to provide an improved grate especially adapted for use in upright steam-generators and house-furnaces, and,also and in combination therewithanimproved generator or furnace-base, all of which will be hereinafter fully set forth.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figurel is a sectional elevation showing my improved grate andbaseapplied to an upright steam-generator which is designed for heating buildings. Fig. 2 is a side elevation of the base. Fig. 3 is a sectional elevation of the grate- Fig. 4 is a plan of the base. Fig. 5 is a plan of the grate. 1 I

In Fig. 1 an upright cylindrical steam-generator is indicated at A as supported on the annular flange a of the improved generator or furnace-base B, one of Whose sides, 13', as shown in Fig. 2, provided with doors B for giving access to the ash-pit, is secured in place by screws, as indicated, so that it may be easily taken off and thereby make a sufficient opening for the ready removal and replacement of the grate O. Projecting centrally upward from the bottom of the base B is a standard, D, (shown herein as an integral part of saidbase,) the upper portion of which is fashioned into a half of a journal-box, as shown at b, the said journal-box being completed by a cap, b. (Shown in Fig. 4..)

The grate G is constructed in two sections, (1 d, the one, d,which is adapted to be shaken only laterally, and having its fluted edge or rim a continuous circle,embracing about threequarters of the grate area, and the other section, cl, hinged, as shown, at d, in an opening in the larger section, so that it may be recip-. rocated laterally with said section, and may also be dumped or swung down on its hinges (i for discharge of clinkers, &c. The larger grate-section, d, has its bars preferably formed at right angles to those of the smaller section,

d, and is provided with a shaking-bar socket, d extending horizontally outward, as shown in Figs. 1 and 5, designed to receive the shaking-bar d". (Shown in Fig. 1.)

A lug, f, is formed on the periphery of the grate-section d, and through this is bored a hole, f, and a corresponding groove, y, is made in the under side of the outer edge of the dumping-section d, as indicated in Figs. 3 and 5, and through and into said hole and groove, respectively, is introduced a locking-pin, E, which, when in place,serves to hold the dumping-section (1 up in position, and which,when withdrawn,permits said section to swing down on its hinges. Said pin E has, preferably, a weighted downwardly curved handle, as shown, to better insure its security or continuance in place when the grate is shaken,which security is further assured by the hole and grooveff and it isdesigned to project outward through an opening, as h, Fig. 2, in a side of the base, so as to be convenient to the operator.

A downwardly-projecting spindle, F,-serv ing as the pivot on which the grate moves when shaken, is secured in a central boss, 70, of the grate O, and the latter is fixed and supported in place by entering said spindle into the upper part, b, of the standard D, and then applying and securing the cap I) in place.

It will be seen, as in Fig. 1, that when the grate is in place its periphery extends beneath the flange a of the base B, and not in contact with it, and that the only bearing or contact-point of the grate itself on or with the base is the lower face of the boss with the annular collar formed by the upper face of the j ournatbox I) 1/,- hence it is obvious that the shaking friction and the power required to shake the grate are reduced to a minimum.

This grate being of the form as indicated in Fig. 1, with deep sides and ample air-spaces, as shown in Figs. 1, 3, and 5, and being set so as to allow free air-space between its rim and the'base-flange, is especially adapted and arranged to endure for an unusual time without distortion or other injury from the heat of the furnace-fire, from the superincumbent weight of coal, or from rough usage.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A shaking-grate adapted for an upright TOO furnace or steam-generator, constructed substantially as herein shown and described, of a large section having an unbroken annular fluted rim and a central boss adapted to receive a spindle, and a smaller section hinged in an opening in the large section and adapted to be dumped, as set forth.

2. The combination,with a grate adapted for an upright furnace or steam-generator and provided with a central spindle or pivot, of a furnace or generator base provided with a central standard rising from its bottom and havlng an upright journal-box with removable cap adapted to receive and hold said spindle,

3. A circular shaking-grate, 0, constructed in two sections, (1 d, the section (1 having its rim or edge continuous and fluted,and the section (1 being hinged in the section (I, so that it may be dumped, said grate also being constructed with central boss, 70, adapted to receive an uprightsupporting-spindle and with perforated lugf and groove f"', and provided with weighted locking-pin E, all arranged and operating as set forth.

In testimony thatI claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 2d day of October, 1886. o 

